Misc golf and perf improvements

chameleonic.p8

@@ -234,10 +234,10 @@ function level:reinit(n)
  self.ix=n
  self.todo={}
  self.bigx,self.bigy=n%8,n\8
+ self.dirty=false
 
  self:load_dynobjs()
- self:recollide()
- self:reanchor(true)
+ self:recollide_reanchor()
  self:spawn_exit()
 end
 
@@ -309,10 +309,12 @@ function level:update()
  end
  for cix in all(remove) do
   self._crates[cix]=nil
+  self.dirty=true
  end
- if #remove>0 then
-  self:recollide()
-  self:reanchor()
+
+ if self.dirty then
+  self:recollide_reanchor()
+  self.dirty=false
  end
 end
 
@@ -344,7 +346,7 @@ function level:load_dynobjs()
  end
 end
 
-function level:recollide()
+function level:recollide_reanchor()
  self._coll={}
  for mx=0,15 do
   for my=0,15 do
@@ -354,9 +356,7 @@ function level:recollide()
     self._crates[mxy]
   end
  end
-end
 
-function level:reanchor()
  local anch_new={}
  for dxy in all{{-1,-1},{1,-1},{-1,1},{1,1}} do
   local dx,dy=unpack(dxy)
@@ -389,17 +389,12 @@ function level:reanchor()
   end
  end
 
- local anch_old=self._anch or {}
- for _,old in pairs(anch_old) do
-  old.dropped=true
- end
-
+ local moves={}
  for k,new in pairs(anch_new) do
-  local old=anch_old[k]
+  local old=(self._anch or {})[k]
   if old then
-   anch_new[k]=old
-   old.ax_old,old.ay_old,old.ax,old.ay,old.adx,old.ady=old.ax,old.ay,new.ax,new.ay,new.adx,new.ady
-   old.dropped=nil
+   anch_new[k]=new
+   if (old.ax!=new.ax or old.ay!=new.ay) add(moves,{old.ax,old.ay,new.ax,new.ay,old,key=k})
   end
  end
  self._anch=anch_new
@@ -408,15 +403,16 @@ function level:reanchor()
   add(self._anch_keys,{key=k})
  end
  shellsort(self._anch_keys)
- for point in self:anchor_points() do
-  if point.ax_old and player.rope and (point.ax_old != point.ax or point.ay_old != point.ay) then 
-   -- printh("moving: "..tostring({point.ax_old,point.ay_old}).."=>"..tostring({point.ax,point.ay}))
-   player.rope:be_pushed_by(point,point.ax_old,point.ay_old)
-  end
-  point.ax_old,point.ay_old=nil,nil
+ shellsort(moves)
+ --printh("!!STARTING!!")
+
+ if player.rope then
+  player.rope:experience_anchor_moves(moves)
  end
 
- if (player.rope) player.rope:relax()
+ for point in self:anchor_points() do
+  point.moved=nil
+ end
 end
 
 function level:win_at(mx,my)
@@ -424,13 +420,20 @@ function level:win_at(mx,my)
 end
 
 function level:anchor_points()
- keys=all(self._anch_keys)
+ -- TODO: Return this to using all()
+ local keys=all(self._anch_keys)
  return function() 
   local k=keys()
   if (k) return self._anch[k.key]
  end
 end
 
+function level:anchor_at(ax,ay)
+ for i in self:anchor_points() do
+  if (i.ax==ax and i.ay==ay) return i
+ end
+end
+
 function level:get_open_pit(mx,my)
  local pit=self._pits[_mix(mx,my)]
  if (pit and not pit.contents) return pit
@@ -467,13 +470,10 @@ function level:spawn_exit()
 end
 
 function level:mcoll(mx,my)
+ if ((mx | my) & 0xFFF0!=0) return true
  return self._coll[_mix(mx,my)]
 end
 
-function level:pcoll(px,py)
- return self:mcoll(px\8,py\8)
-end
-
 function level:get_crate(mx,my)
  return self._crates[_mix(mx,my)]
 end
@@ -554,7 +554,6 @@ function level:can_move(
  if (is_player and self:win_at(mx1,my1)) return true 
  if (is_player and self:get_open_pit(mx1,my1)) return wrongbleep:adequately_warned()
 
- if ((mx1 | my1) & 0xFFF0!=0) return false
  if (self:mcoll(mx1,my1) or player.x==mx1 and player.y==my1) return 
 
  if player.rope then
@@ -576,8 +575,7 @@ function level:tug_crate(mx0,my0,dmx,dmy)
  local px1,py1=mx1*8,my1*8
  existing.todo={
   {px=px1+dmx,py=py1+dmy,mx=mx1,my=my1,update=function()
-   self:recollide()
-   self:reanchor()
+   self.dirty=true
    return true
   end},
   {px=px1,py=py1}
@@ -993,31 +991,26 @@ function rope:draw(artificial_px,artificial_py)
  local sy=0
  while true do
   if (n1==nil) break
+  local anch=level:anchor_at(n1.ax,n1.ay)
   local x=n1.ax*8
   local y=n1.ay*8
-  if n1.associated_with then
-   if (n1.associated_with.adx>0) x-=1
-   if (n1.associated_with.ady>0) y-=1
+  if anch then
+   if (anch.adx>0) x-=1
+   if (anch.ady>0) y-=1
   end
   rectfill(x-1,y-1,x+1,y+1,12)
   print("ax="..n1.ax..",ay="..n1.ay,72,sy)
-  print(tostring(n1.associated_with and (not n1.associated_with.dropped and n1.associated_with.ax==n1.ax and n1.associated_with.ay==n1.ay)),76,sy+7)
-  sy+=14
+  sy+=7
 
   local n0=n1.prev
   local n2=n1.next
   if n0!=nil and n2!=nil then
-   if n1.associated_with then
-    local _,_,_,adx,ady=would_stick(n0.ax,n0.ay,n1.associated_with,n2.ax,n2.ay)
-    assert(adx==-1 or adx==0 or adx==1)
-    assert(ady==-1 or ady==0 or ady==1)
-    --assert(not (adx==0 and ady==0))
+   if anch then
+    local _,_,_=would_stick(anch,n0.ax,n0.ay,n1.ax,n1.ay,n2.ax,n2.ay)
 
     local c=3
-    if (n1.associated_with.dropped) c=4
+    if (anch.dropped) c=4
     rectfill(x+2,y+2,x+4,y+4,c)
-    pset(x+adx*2,y,9)
-    pset(x,y+ady*2,9)
    else
    rectfill(x+2,y+2,x+4,y+4,2)
    end
@@ -1036,7 +1029,7 @@ function rope:draw(artificial_px,artificial_py)
 	 pset(x+p.adx,y,11)
 	 pset(x,y+p.ady,11)
 	end
- ]]
+  ]]
 end
 
 function rope:drag_dst(x,y)
@@ -1055,26 +1048,13 @@ function rope:drag(n1,ax_new,ay_new)
 end
 
 function rope:relax()
- local n0=self.src
- while n0 do
-  if n0.associated_with and n0.associated_with.dropped then
-   for i in level:anchor_points() do
-    if i.ax==n0.ax and i.ay==n0.ay then
-     n0.associated_with=i
-     break
-    end
-   end
-  end
-
-  n0=n0.next
- end
-
  local n0=self.src
  while true do
   local n1=n0.next
   if (not n1) break
   local n2=n1.next
 
+
   if n0.ax==n1.ax and n0.ay==n1.ay then 
    n0.next=n2 
    if (n2) n2.prev=n0
@@ -1090,29 +1070,20 @@ function rope:relax()
   local n2=n1.next
   if (not n2) return
 
-  if n1.associated_with then
+  local x0,y0=n0.ax,n0.ay
+  local x1,y1=n1.ax,n1.ay
+  local x2,y2=n2.ax,n2.ay
 
-   local x0,y0=n0.ax,n0.ay
-   local x1,y1=n1.ax,n1.ay
-   local x2,y2=n2.ax,n2.ay
-
-   if x1!=n1.associated_with.ax or y1!=n1.associated_with.ay then
-    -- printh("dragging home: "..tostring{n1.ax,n1.ay}.."->"..tostring(n1.associated_with))
-    self:_drag(n1,n1.associated_with.ax,n1.associated_with.ay)
-   end
-
-   local would,x1_new,y1_new=would_stick(x0,y0,n1.associated_with,x2,y2)
-   if not would and not (n1.ax==x1_new and n1.ay==y1_new) then
-    -- printh("dragging: "..tostring{n1.associated_with, {x1_new, y1_new}})
-    -- printh("relaxing: "..tostring(n0.associated_with).."->"..tostring(n1.associated_with).."->"..tostring(n2.associated_with))
-    self:_drag(n1,x1_new,y1_new,n1.ax,n1.ay)
-    n0=n1.prev
-    n2=n1.next
-    n0.next=n2
-    n2.prev=n0
-    n1.next=nil
-    n1.prev=nil
-   else n0=n0.next end
+  local anch=level:anchor_at(n1.ax,n1.ay)
+  local would,x1_new,y1_new=would_stick(anch,x0,y0,x1,y1,x2,y2)
+  if not would and not (n1.ax==x1_new and n1.ay==y1_new) then
+   self:_drag(n1,x1_new,y1_new,n1.ax,n1.ay)
+   n0=n1.prev
+   n2=n1.next
+   n0.next=n2
+   n2.prev=n0
+   n1.next=nil
+   n1.prev=nil
   else n0=n0.next end
  end
 end
@@ -1185,43 +1156,69 @@ function rope:_check_sane()
  return true
 end
 
-function would_stick(x0,y0,anchor,x2,y2)
- local x1,y1=anchor.ax,anchor.ay
-
- local dx=x2-x0
- local dy=y2-y0
+function would_stick(anchor,x0,y0,x1,y1,x2,y2)
+ x1,y1=x1 or anchor.ax,y1 or anchor.ay
 
+ local dx,dy=x2-x0,y2-y0
  if (x1==x0 and y1==y0) return 
  if (x1==x2 and y1==y2) return 
 
- local adx,ady
- local x1_new,y1_new
- if abs(dx)>abs(dy) then
-  if (x0>x2) dx,x0,y0,x2,y2=-dx,x2,y2,x0,y0
-  local dprop=(x1-x0)/dx
-  x1_new,y1_new=x1,y0+dprop*(y2-y0)
-  ady=sgn0(y1_new-y1)
-  adx=0
-  if (y0>y2) adx=ady
-  if (y0<y2) adx=-ady
- else
-  if (y0>y2) dy,x0,y0,x2,y2=-dy,x2,y2,x0,y0
-  local dprop=(y1-y0)/dy
-  x1_new,y1_new=x0+dprop*(x2-x0),y1
-  adx=sgn0(x1_new-x1)
-  ady=0
-  if (x0>x2) ady=adx
-  if (x0<x2) ady=-adx
+ local function switch_ends() 
+  dx,dy,x0,y0,x2,y2=-dx,-dy,x2,y2,x0,y0
  end
 
- local wouldnt=anchor.dropped or (anchor.adx!=adx or anchor.ady!=ady)
+ local function signs(douter,dinner)
+  local adb=sgn0(dinner)
+  return -sgn0(douter)*adb,adb
+ end
 
- return not wouldnt,x1_new,y1_new,adx,ady
+ local adx,ady,x1_new,y1_new
+ if abs(dx)>abs(dy) then
+  if (x0>x2) switch_ends()
+  x1_new,y1_new=x1,y0+(x1-x0)/dx*dy
+  adx,ady=signs(dy,y1_new-y1)
+ else
+  if (y0>y2) switch_ends()
+  x1_new,y1_new=x0+(y1-y0)/dy*dx,y1
+  ady,adx=signs(dx,x1_new-x1)
+ end
+
+ return 
+  anchor and anchor.adx==adx and anchor.ady==ady,
+  x1_new,y1_new
 end
 
-function rope:be_pushed_by(anchor,ax_old,ay_old)
+function rope:experience_anchor_moves(moves)
+ self:_be_dragged_by(moves)
+ self:_be_pushed_by(moves)
+ self:relax()
+end
+
+function rope:_be_dragged_by(moves)
+ local n=self.src
+ while n do
+  for t in all(moves) do
+   local ax_old,ay_old,ax_new,ay_new=unpack(t)
+   if (ax_old==n.ax and ay_old==n.ay) n.dest={ax_new,ay_new} break
+  end
+  n=n.next
+ end
+
+ n=self.src
+ while n do
+  if (n.dest) self:_drag(n,unpack(n.dest)) n.dest=nil
+  n=n.next
+ end
+end
+
+function rope:_be_pushed_by(moves)
+ for i in all(moves) do
+  self:_be_pushed_by1(unpack(i))
+ end
+end
+
+function rope:_be_pushed_by1(ax_old,ay_old,ax_new,ay_new,anch)
  local n0=self.src
- local ax_new,ay_new=anchor.ax,anchor.ay
  while true do
   n1=n0.next
   if (not n1) return
@@ -1231,35 +1228,30 @@ function rope:be_pushed_by(anchor,ax_old,ay_old)
 
   local nxmn,nxmx = _mnmx(nx0,nx1)
   local nymn,nymx = _mnmx(ny0,ny1)
-  -- printh(tostring({anchor,nxmn,nxmx,nymn,nymx}))
 
   if
-   (ax_new!=ax_old or (nxmn<=anchor.ax and anchor.ax<=nxmx)) and 
-   (ay_new!=ay_old or (nymn<=anchor.ay and anchor.ay<=nymx)) and 
+   (ax_new!=ax_old or (nxmn<ax_new and ax_new<nxmx)) and 
+   (ay_new!=ay_old or (nymn<ay_new and ay_new<nymx)) and 
 
    (_which_side(ax_old,ay_old,nx0,ny0,nx1,ny1)!= 
     _which_side(ax_new,ay_new,nx0,ny0,nx1,ny1) 
-   ) and would_stick(nx0,ny0,anchor,nx1,ny1)
+   ) and would_stick(anch,nx0,ny0,nil,nil,nx1,ny1)
   then
-   -- printh("found (in): "..tostring({{nx0,ny0},{nx1,ny1}, anchor}))
    local nx05,ny05
    if ax_new==ax_old then
-    nx05=anchor.ax
+    nx05=ax_new
     ny05=ny0+(nx05-nx0)/(nx1-nx0) * (ny1-ny0)
-    -- printh("found (x): "..tostring({nx05,ny05}))
    elseif ay_new==ay_old then
-    ny05=anchor.ay
+    ny05=ay_new
     nx05=nx0+(ny05-ny0)/(ny1-ny0) * (nx1-nx0)
-    -- printh("found (y): "..tostring({nx05,ny05}))
    end
 
-   local n05={ax=nx05,ay=ny05,associated_with=anchor,prev=n0,next=n1}
-   --printh("adding: "..tostring({nx05,ny05,anchor}))
+   local n05={ax=nx05,ay=ny05,prev=n0,next=n1}
    n0.next=n05
    n1.prev=n05
-   self:_drag(n05,anchor.ax,anchor.ay)
-   -- printh("dragged: "..tostring({n05.ax,n05.ay,anchor}))
-   -- printh("local: "..tostring(n0.associated_with).."->"..tostring(n05.associated_with).."->"..tostring(n1.associated_with))
+   -- printh("creating: "..tostring{anch,{n0.ax,n0.ay},{n05.ax,n05.ay},{n1.ax,n1.ay}})
+   -- printh("dragging: "..tostring{anch,{n05.ax,n05.ay},{ax_new,ay_new}})
+   self:_drag(n05,ax_new,ay_new)
   else
    n0=n0.next
   end
@@ -1286,7 +1278,7 @@ function rope:_drag(n1,ax1_new,ay1_new,ax_removing,ay_removing)
      if 
       not _uncreatable(anchor) and
       (ax0<=anchor.ax and anchor.ax<=ax1) and 
-      would_stick(ax_pivot,ay_pivot,anchor,ax_far,ay_far_new) and
+      would_stick(anchor,ax_pivot,ay_pivot,nil,nil,ax_far,ay_far_new) and
       (
         _which_side(anchor.ax,anchor.ay,ax_pivot,ay_pivot,ax_far,ay_far_old) !=
         _which_side(anchor.ax,anchor.ay,ax_pivot,ay_pivot,ax_far,ay_far_new)
@@ -1307,7 +1299,7 @@ function rope:_drag(n1,ax1_new,ay1_new,ax_removing,ay_removing)
      if 
       not _uncreatable(anchor) and
       (ay0<=anchor.ay and anchor.ay<=ay1) and 
-      would_stick(ax_pivot,ay_pivot,anchor,ax_far_new,ay_far) and
+      would_stick(anchor,ax_pivot,ay_pivot,nil,nil,ax_far_new,ay_far) and
       (
         _which_side(anchor.ax,anchor.ay,ax_pivot,ay_pivot,ax_far_old,ay_far) !=
         _which_side(anchor.ax,anchor.ay,ax_pivot,ay_pivot,ax_far_new,ay_far)
@@ -1332,8 +1324,7 @@ function rope:_drag(n1,ax1_new,ay1_new,ax_removing,ay_removing)
    n0.ax,n0.ay,ax1_old,ay1_old,ax1_new,ay1_new
    )
   if (not anch) break
-  local n05={ax=anch.ax,ay=anch.ay,associated_with=anch,prev=n0,next=n1}
-  -- printh("creating pre: "..tostring(n0.associated_with).."->"..tostring(n05.associated_with).."->"..tostring(n1.associated_with))
+  local n05={ax=anch.ax,ay=anch.ay,prev=n0,next=n1}
   n0.next=n05
   n1.prev=n05
   n0=n05
@@ -1346,8 +1337,7 @@ function rope:_drag(n1,ax1_new,ay1_new,ax_removing,ay_removing)
    n2.ax,n2.ay,ax1_old,ay1_old,ax1_new,ay1_new
   )
   if (not anch) break
-  local n15={ax=anch.ax,ay=anch.ay,associated_with=anch,prev=n1,next=n2}
-  -- printh("creating post: "..tostring(n1.associated_with).."->"..tostring(n15.associated_with).."->"..tostring(n2.associated_with))
+  local n15={ax=anch.ax,ay=anch.ay,prev=n1,next=n2}
   n1.next=n15
   n2.prev=n15
   n2=n15
@@ -1633,7 +1623,7 @@ function rope:_anchors_simplified()
    x=flr(a.ax*8+0.5),y=flr(a.ay*8+0.5),
    ax=a.ax,ay=a.ay
   }
-  local aw=a.associated_with
+  local aw=level:anchor_at(a.ax,a.ay)
   local l=self.latch
   if aw then
    if (aw.adx==1) point.x-=1